What is the environmental impact of powder coat vs. paint? Your choice of painting material may contribute to environmental pollution, pose a health risk to society, and cost you in other ways.
Paint is one of the most widely used materials – you can spot it on buildings, cars, everyday appliances, and many personal accessories. Paint serves aesthetic and practical purposes, but the choice of paint may come at a cost to the environment and society. Here is a brief overview of the environmental impacts of wet paint versus powder coating.
Powder Coating vs Wet Paint – The Environmental Impacts
Wet paint is liquid paint, categorized into two types: solvent-based and water-based paints. Solvent-based paints are made of oil and chemicals comprising solvents and synthetic pigments. In contrast, water-based paint doesn’t contain most chemicals in solvent-based paint.
Powder coating is a form of spray paint that uses dry paint powder. The dry paint is applied to metals and other surfaces via an electrostatic process. Overall, it is safer for the environment and offers more benefits than wet paint.
Minnesota Industrial Coatings offers durable and aesthetically robust powder coating solutions. Visit our website today to learn more.
Wet paint and powder coating have varying impacts on the environment. Here is an overview of three notable environmental impacts of powder coat vs. paint.
Volatile Organic Compounds (VOCs)
Solvent-based wet paint contains chemicals that contain harmful Volatile Organic Compounds (VOCs), such as formaldehyde. In contrast, powder coating has negligible (or zero) VOCs.
VOCs are among the known contributors to air pollution. They also pose several health risks to people, including headaches and eye, nose, and throat infections. Solvent-based paints emit VOCs into the air during production and application before the finishing cures. It is also worth noting that water-based paints without VOCs are less durable and appealing than powder coating and solvent-based paints.
Hazardous Waste Production
Besides VOCs, wet paint also contains and emits other hazardous chemicals and pollutants. Any waste from the paint also contains these hazardous materials, and these wastes can leak into the air, soil, and water when disposed of incorrectly. Unfortunately, wet paint produces considerable waste during application (spilling) and over time as it wears off (peeling and shedding). Unfortunately, the only solution to this problem is proper waste disposal.
In contrast, powder coating is more efficient and produces less waste than wet paint. More importantly, the dry powder doesn’t contain harmful chemicals, so any waste generated during application and over time as the finish wears off is not hazardous.
Recycling is one of the most efficient solutions to waste and environmental pollution. Ideally, recycling wasted paint would lower its production and reduce its environmental impact.
Unfortunately, it is impossible to recycle wet paint outside the production process. It is also worth noting that oil is one of the primary ingredients in solvent-based paint and is one of the world’s most sought-after non-renewable resources. Finding, mining, and processing oil for paint production uses energy and contributes to environmental pollution.
In contrast, spray paint is recyclable and reusable. The powder coating process uses an electrostatic charge to ensure that the paint adheres to the metal surface, reducing the amount of overspray (wasted paint). More notably, the overspray falls to the ground and can be collected for recycling. However, it is worth noting that spray paint is only recyclable if it doesn’t contain multiple color mixtures.
Durability & Aesthetic Appeal
The durability of finishing using different paint types also affects the paint’s utilization rate and, as such, its environmental impact. Ideally, you will use more paint to repaint and refinish surfaces if the finish deteriorates quickly and less if the finish lasts longer. Similarly, you may need to repaint surfaces with unappealing finishes when their texture and appearance deteriorate over time.
A protective finish using wet paint usually lasts five to ten years. In contrast, powder coating makes for a durable finish lasting up to 20 years. It is also worth noting that wet paint finishes require regular maintenance, such as cleaning.
It is also worth noting that damages to powder coating finishes are more accessible to fix than damages to wet paint finishes. Repairing wet paint finishes entails removing a significant portion of the surrounding paint and applying a fresh layer of the hazardous paint, releasing more pollutants. In contrast, fixing damages in powder coating finishes entails spraying the damaged part using the same non-hazardous spray.
Mitigating the Negative Environmental Impacts of Paint
Paint’s negative impacts on the environment haven’t gone unnoticed by the world and the relevant authorities. The U.S. government is exploring solutions to the environmental pollution risks posed by paint. Notably, the ACA submitted a formal request to OSHA to investigate and review the health risks associated with paint and other hazardous materials.
Adopting environmental-friendly paints (without hazardous materials) is one of the proposed solutions for mitigating the negative environmental impacts of solvent-based paint. The proposed alternatives include acrylic paints and powder coating.
Reliable Powder Coating & Electro-Coating Solutions in Minnesota
Powder coating is safer for the environment and society than wet paint. Using high-quality powder coating for your finishing projects is advisable, and Minnesota Industrial Coatings offers only the best e-coating and powder coating solutions. Get in touch to learn more about our products or request a free estimate for your next painting project.